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Nicotine and Cotinine Test

February 2, 2023
Test

Nicotine and cotinine tests detect evidence of nicotine in the body. Learn more about when these tests may be used and how to understand your test results.

Prostate Specific Antigen (PSA) Test

October 6, 2023
Test

Find out when you might consider getting a Prostate Specific Antigen Test, also known as a PSA, and what it can tell you.

Urine Drug Test

February 2, 2023
Test

Urine drug tests are the most common method of testing for the use of illegal drugs and the misuse of prescription and over-the-counter medicines.

Hair Follicle Drug Test

November 9, 2021
Test

Considering a hair follicle drug test? Learn about how long drugs can be detected in the hair, which drugs can be identified, and how hair testing works.

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Collecting Samples for Laboratory Testing

January 27, 2021
Article

Today's technologies allow testing on an impressively wide variety of samples collected from the human body. Learn about these samples and how they are collected to ensure accurate and reliable testing.

Drug Testing

October 4, 2022
Page

Drug testing detects evidence of drug use. Learn about types of drug tests, when drug testing is used, and interpreting drug test results.

Gastrin

November 9, 2021
Test

Gastrin is a hormone that regulates the production of acid in the stomach during the digestive process. The gastrin test helps diagnose tumors called gastrinomas, Zollinger-Ellison (ZE) syndrome, and hyperplasia of G-cells.